This need to be further discussed. Section 5 Continued. The market volatility of commodity prices is determined by the temporary relationship between the demand for goods and the supply of goods that are easily accessible to the market. When the market price is higher than its normal level, the person who can supply the new goods in a timely manner at a high price can get an extra high reward; if they are self-reliant handicraftsmen, all of the price increases are Their reward increased. However, in the modern industrial world, bear the risk of production and by the price rise and the decline of the people, the first is the industrial capitalists. The direct costs incurred in the production of goods, that is, the net income above the direct (monetary) cost of the goods, are temporarily paid in the form of capital invested in their various forms of business (their talents and abilities are also included). But when the business boom, employers compete with each other, everyone wants to expand the business, trying to get as much as possible high profits, so the pressure of competition so that employers agree to pay workers higher wages in order to obtain their Service; even if the employers are acting in a consistent manner, refusing to make any concessions, their union will force them to increase their wages, otherwise the benefits offered by the market boom will disappear. The result is that, in the near future, a large part of this interest is owned by the workers; as long as prosperity continues to exist, their wages remain above normal levels. For example, when the inflation peaked in 1873, the wages of the miners were high, and the high wages were determined by the demand for miners and the amount of skilled labor at the time (the unskilled labor transferred to mining could be counted as The same efficiency of a certain amount of skilled labor). If it was not possible to enter this unskilled labor at that time, the miners' wages were limited only by two reasons: on the one hand, the elasticity of demand for coal and the gradual realization of the working age of miners. The fact is that the people who have absorbed from his business are reluctant to abandon their own business because they may be able to get a high salary if they remain in the industry. At that time the prosperity of the coal industry is only the highest peak of the credit boom.